Improved SCR Systems for Heavy Duty Applications 2000-01-0189
This paper describes the function and application of the preoxidation, hydrolysis and SCR catalysts individually and as a combined system for urea SCR both in model gas and engine bench tests. Using the basic system and a non-optimized urea injection strategy 45% NOx conversion was achieved in the ESC engine test. Adding a preoxidation catalyst significantly improved the NOx conversion in the low temperature region of the engine mapping. NOx conversions over 75% can be achieved in the ESC test using this improved system. With a 50% reduced SCR catalyst volume still a NOx conversion of over 65% could be achieved. Tests after 200 hours engine aging show that the activity of the system is stable.
Citation: Gieshoff, J., Schäfer-Sindlinger, A., Spurk, P., van den Tillaart, J. et al., "Improved SCR Systems for Heavy Duty Applications," SAE Technical Paper 2000-01-0189, 2000, https://doi.org/10.4271/2000-01-0189. Download Citation
Author(s):
J. Gieshoff, A. Schäfer-Sindlinger, P. C. Spurk, J. A. A. van den Tillaart, G. Garr
Affiliated:
Degussa-Hüls AG, ICT Inc.
Pages: 10
Event:
SAE 2000 World Congress
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Diesel Exhaust Aftertreatment 2000-SP-1497, Diesel Nitrogen Oxide Emissions, Landmark Research 1995-2001-PT-89, Diesel Exhaust Aftertreatment 2000-2007-PT-126, SAE 2000 Transactions Journal of Fuels and Lubricants-V109-4
Related Topics:
Catalysts
Selective catalytic reduction
Cartography
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